## Conversion formula

The conversion factor from feet per second to kilometers per hour is 1.0972799999991, which means that 1 foot per second is equal to 1.0972799999991 kilometers per hour:

1 ft/s = 1.0972799999991 km/h

To convert 2.1 feet per second into kilometers per hour we have to multiply 2.1 by the conversion factor in order to get the velocity amount from feet per second to kilometers per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 1.0972799999991 km/h

2.1 ft/s → V(km/h)

Solve the above proportion to obtain the velocity V in kilometers per hour:

V(km/h) = 2.1 ft/s × 1.0972799999991 km/h

V(km/h) = 2.3042879999982 km/h

The final result is:

2.1 ft/s → 2.3042879999982 km/h

We conclude that 2.1 feet per second is equivalent to 2.3042879999982 kilometers per hour:

2.1 feet per second = 2.3042879999982 kilometers per hour

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer per hour is equal to 0.43397353108674 × 2.1 feet per second.

Another way is saying that 2.1 feet per second is equal to 1 ÷ 0.43397353108674 kilometers per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two point one feet per second is approximately two point three zero four kilometers per hour:

2.1 ft/s ≅ 2.304 km/h

An alternative is also that one kilometer per hour is approximately zero point four three four times two point one feet per second.

## Conversion table

### feet per second to kilometers per hour chart

For quick reference purposes, below is the conversion table you can use to convert from feet per second to kilometers per hour

feet per second (ft/s) kilometers per hour (km/h)
3.1 feet per second 3.402 kilometers per hour
4.1 feet per second 4.499 kilometers per hour
5.1 feet per second 5.596 kilometers per hour
6.1 feet per second 6.693 kilometers per hour
7.1 feet per second 7.791 kilometers per hour
8.1 feet per second 8.888 kilometers per hour
9.1 feet per second 9.985 kilometers per hour
10.1 feet per second 11.083 kilometers per hour
11.1 feet per second 12.18 kilometers per hour
12.1 feet per second 13.277 kilometers per hour